Perforating-machine



A. L. DAUT-REY. PERFORATING MACHINE.

APPLICATION FILED JULY 3, 1920.

"1,375,680. Patented Apr. 26, 1 921.

2 SHEETSSHEET 1. I

gwoemtoz Maul jazz??? attoz wags.

A. L. DAUTREY.

PERFORATING MACHINE.

APPLICATION FILED JULY 3; 1920. I 7 1,375,680, Patented Apr. 26, 1921.

2 SHEETSSHEET 2.-

UNITED STATES PATENT OFFICE.

ANDREW I.. ZDA'UTREY, or CHICAGO, ILLINOIS.

'PERFORATING-MACHINE,

Specification of Letters Patent.

Patented Apr. 26, 1921.

Application filed July 3, 1920. .Serial No. 393,820.

Improvements in Perforating-Machines, of.

which the following is a specification. I

This invention relates to machines for perforating sheets of paper used as embroidery patterns and the like.

The invention has for its object to provide a machine of the kind stated which is A furtherobject of the invention is to provide a simple and eflicient means for guiding the perforating needle, and also to adjust the latter to make different sized perforations.

With the objects stated in view, the invention consists in a combination and arrangement of parts to be hereinafter described and claimed, and in order that the same may be better understood, reference is had to the accompanying drawing forming a part of this specification.

In the drawing, I

Figure 1 is a side elevation of the machine;

Fig. 2 is afront elevation;

Fig. 3 is an enlarged view of the upper portion of Fig. 2, partly broken away; c

Fig. 4 is a perspective view ofa fragment of the machine at the site of the motor; and

Fig. 5 is .a similar view illustrating the parts at the bottom of the machine.

Referring specifically to the drawing, 10 denotes a standard rising to a suitable height from a base 11 and forming a supporting member for the machine. The up per end of the standard telescopically seats an extension rod 12 which is free to rotate,

and carries a laterally extending bracketframe is pivoted so that it may be swung toward and from the standard 10.- The bracket arm 13 is yieldingly supported in laterally extending position by aspring 15 connected at one end to the same, and at its other end to the upper end of the rod 12.

At the bottom of the frame bars 14 is supported an electric motor 16, the same seating on two base blocks 17 with a layer 18 of felt or other suitable cushioning mate rial between the blocks toabsorb the vibrations of the motor. The frame bars 14 seat in grooves in the ends of theblocks 17 and they are fastened to thelower block only, the motor 16 seating onthe top block and being suitably fastened down thereon.

, From the lower base block 17 extend two depending laterally spaced bars 19, one of which has an offset at its lower end toward the other the two bars being here riveted or otherwise fastened together. The offset is arranged to produce two vertically spaced guides 20 for a reciprocating needle bar 21 carrying at its lower end the needle 22 which makes the perforations. V

The needle bar 21 is driven by the motor 16 the shaft 23 of the latter being belted or otherwise operatively connected, as shown at 24, to a pulley 25 driving an eccentric 26 which is connected to the needle bar.

Near the lower end of the needle bar 21, the bars 19 carry a block 27 from which de pends a pin 28 terminating at the bottom in a head 29. The pin 28 is held adjustably in a socket in the block 27 by a set screw 30..

On the pin 28 is rotatably mounted a collar 31 held-down againstthe head 29 by a spring 32 coiled around the pin between the collar and the bottom of the block 27. I To the collar is pivotally connected, as shown at 33, a handle 34, the pivotal connection being such that the handle may be swung up and down, and as the collar is rotatable on the pin, the handle may also be swung horizontally. The spring 32 holds the collar 31 firmly, and also takes up vibrations and relieves the handle of the same.

In operation, the handle 34 is grasped by the operator to guide the needle 22 across the sheet to be perforated. The head 29 of the pin 28 slides across the sheet and determines the size of the perforations, as it determines the distance of the needle from the sheet, this distance being regulated by adjusting the pin vertically. As the handle 34 may be swung up and down, and also horizontally, the needle 22 can be very convenientl and easily guided across the work especia y if the lines of perforations run in a curved and zigzag manner, and it is not necessary to move the whole arm to guide the needle forthis kind of work.

An automatic switch is also Provided for starting the motor 16 when the handle 34 is pressed down to draw down the needle bar supporting frame far enough to lower the needle 22 to operative position. This switch comprises a pivoted blade 35 carrying a contact 36 positioned to engage a contact 37 suitable circuit connections with the contacts being provided. A spring 38 connected to the blade tends to swing the same to bring the contacts together. One end of the switch blade 35 is in the path of and intercepted-by an abutment 39 carried by and projecting from the rod 12. The switch blade 35 and the contact 37 are mounted on the bracket arm 13.

It will be evident from the foregoing that when the bracketarm 13 is pulled downwardly by the handle 34 to lower the perforating needle 22 to operative position, the switch blade 35 leaves the abutment 39, whereupon the switch blade is swung by its spring 38 to circuit closing position. WVhen the handle 34 is released, the spring 15 swings the bracket arm 13 upwardly so that when the switch blade 35 strikes the abutment 39 it is swung to separate the contacts 36 and 37, whereuponthe motor circuit is broken.

When not in use, the handle 34 may be placed in a hook 40 extending from the block 27.

The machine is placed on a work table or other support on which the sheet to be operated on is placed, and all the work is done above the table, none of the mecha nism being under the same. The perforating needle is readily carried to all parts of the sheet as the rod 12 is rotatable, and the bars 14 can swing laterally.

When the machine is not in use, a means i provided to hold the frame thereof suspended so that the spring 15 will be relieved of the weight below it, and the needle will not interfere with objects moved across the work table. This means comprises a cord or wire 41 secured with its upper end to the rod 12, and led down along the middle of the frame, as shown 1n Figs. 1 and 3, to terminate in a loop 42. One of the frame cross-bars is fitted with a projectframe is thus formed by the cord or wire 41.

I claim: 7

1. In a perforating machine, a reciprocatory bar, a perforating needle carried by the bar, a swinging member carrying the needle bar, an electric motor carried by said member and having an operative connection with. the needle bar, and a switch for the motor circuit controlled by the movement of the swin ing member.

2. in a perforating machine, a reciprocato-ry bar, a perforating needle carried by the bar, a swinging member carrying the needle bar, an electric motor carried by said member and having an operative connection with the needle bar, a support for the swinging member, a switch for the motor circuit, said switch having a pivoted blade, and an abutment on the support in the path of the switch blade for throwing the same to circuit-opening position upon the move ment of the swinging member in a direction. to place the needle bar out of operative posi tion.

3. In a perforating machine, a reciprocatory bar, a perforating needle carried by the bar, a swinging member carrying the needle bar, an electric motor carriedby said member and having an operative connection with the needle bar, a support for the swinging member, a switch for the motor circuit, said switch having a pivoted blade, an abutment on the support in the path of the switch blade for throwing the same to circuit-opening position upon the movement of the swinging member in a direction to place the needle bar out of operative position, and means for moving the switch blade to circuit closing position when the swinging member is moved to place the needle bar in operative position.

4. In a perforating machlne, a reclprocatory bar, a perforating needle carried by the bar, a swinging member carrying the needle bar, a handle for guiding the swinging member, and a rotatable support for the handle carried by the swinging member, to which support the handle is pivoted.

In testimony whereof I affix my signature.

ANDREW L. DAUTREY. 

